arm64: defconfig: Enable PHY_ROCKCHIP_INNO_DSIDPHY

In order to work LDVS, DSI in mainline tree for Rockchip based
hardware platforms, the associated PHY driver has to enable
in default defconfig.

Enable rockchip DSI phy driver.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Link: https://lore.kernel.org/r/20201109181017.206834-9-jagan@amarulasolutions.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>